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Every score has a dated snapshot.

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  3. Claude 3.5 Haiku vs OpenAI o1-mini

Pairwise benchmark snapshot · Aug 1, 2026

Claude 3.5 Haiku vs OpenAI o1-mini benchmark

In this head-to-head showdown, OpenAI o1-mini delivers higher overall intelligence and human-preferred responses (Elo 1,445 vs 1,224), while OpenAI o1-mini leads in SWE-bench software engineering benchmarks (56.4%), while Claude 3.5 Haiku is more budget-friendly at $4/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Choose OpenAI o1-mini if your priority is peak reasoning, complex code generation, and top preference Elo. Choose Claude 3.5 Haiku if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
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Verified Head-to-Head Advantage Breakdown

9 direct benchmark disciplines evaluated across capability, speed, and cost

Claude 3.5 Haiku (5)OpenAI o1-mini (4)
Claude 3.5 Haiku
5 of 9 Wins
✓Time to first token✓Output speed✓Input price✓Output price✓Context window
OpenAI o1-mini
4 of 9 Wins
✓Preference Elo✓LiveBench✓SWE-bench✓GPQA Diamond
Anthropic
Leads 5 of 9 metrics
Claude 3.5 Haiku

Previous cheap Claude. Haiku 4.5 is the current $1/$5 SKU.

Elo 1,224$4/1M out
OpenAI
Leads 4 of 9 metrics
OpenAI o1-mini

OpenAI high-speed, cost-effective reasoning model optimized for STEM, math, and code generation.

Elo 1,445$4.4/1M out
Top Rival Showdowns for Claude 3.5 Haiku
All Matchups
Compare vs:vs GPT-5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference LeaderOpenAI o1-mini Wins

OpenAI o1-mini

Δ 221 Arena Elo pts

Throughput LeaderClaude 3.5 Haiku Wins

Claude 3.5 Haiku

140 tok/s

Value per Dollar LeaderClaude 3.5 Haiku Wins

Claude 3.5 Haiku

$4 / 1M output

Capability Percentiles

Relative percentile scores computed across all active models in the benchmark catalog.

Multi-Dimensional Capability Radar

Leaders Matchup Capability Radar

Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
Percentile 0–100
Head-to-Head Comparison

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

Claude 3.5 Haiku (5)vsOpenAI o1-mini (5)
Claude 3.5 Haiku: 5W (50%)Overall: Even matchupOpenAI o1-mini: 5W (50%)
← Claude 3.5 HaikuOpenAI o1-mini →
🏆OpenAI o1-mini(5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Benchmark
Claude 3.5 HaikuvsOpenAI o1-mini
Preference Elo
1,224vs1,445+221
Coding Elo
—vs1,468
SWE-bench
36.2%vs56.4%+20.2%
LiveBench
44.8%vs62%+17.2%
GPQA Diamond
54.1%vs76.8%+22.7%
Claude 3.5 Haiku: 0WOpenAI o1-mini: 5W
🏆Claude 3.5 Haiku(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Claude 3.5 HaikuvsOpenAI o1-mini
Output speed
140 tok/svs85 tok/s+55 tok/s
Time to first token
110 msvs280 ms+170 ms
Claude 3.5 Haiku: 2WOpenAI o1-mini: 0W
🏆Claude 3.5 Haiku(3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Claude 3.5 HaikuvsOpenAI o1-mini
Output price
$4/1Mvs$4.4/1M+$0.4/1M
Input price
$0.8/1Mvs$1.1/1M+$0.3/1M
Context window
200kvs128k+72k
Claude 3.5 Haiku: 3WOpenAI o1-mini: 0W

Side-by-Side Benchmark Matrix

Preference Elo+221
Claude 3.5 Haiku1,224
seed-bootstrap · Aug 1, 2026
OpenAI o1-mini1,445
seed-bootstrap · Aug 1, 2026
Coding Elo
Claude 3.5 Haiku—
OpenAI o1-mini1,468
seed-bootstrap · Aug 1, 2026
LiveBench+17.2%
Claude 3.5 Haiku44.8%
seed-bootstrap · Aug 1, 2026
OpenAI o1-mini62%
seed-bootstrap · Aug 1, 2026
SWE-bench+20.2%
Claude 3.5 Haiku36.2%
seed-bootstrap · Aug 1, 2026
OpenAI o1-mini56.4%
seed-bootstrap · Aug 1, 2026
GPQA Diamond+22.7%
Claude 3.5 Haiku54.1%
seed-bootstrap · Aug 1, 2026
OpenAI o1-mini76.8%
seed-bootstrap · Aug 1, 2026
Time to first token+170 ms
Claude 3.5 Haiku110 ms
seed-bootstrap · Aug 1, 2026
OpenAI o1-mini280 ms
seed-bootstrap · Aug 1, 2026
Output speed+55 tok/s
Claude 3.5 Haiku140 tok/s
seed-bootstrap · Aug 1, 2026
OpenAI o1-mini85 tok/s
seed-bootstrap · Aug 1, 2026
Input price+$0.3/1M
Claude 3.5 Haiku$0.8/1M
seed-bootstrap · Aug 1, 2026
OpenAI o1-mini$1.1/1M
seed-bootstrap · Aug 1, 2026
Output price+$0.4/1M
Claude 3.5 Haiku$4/1M
seed-bootstrap · Aug 1, 2026
OpenAI o1-mini$4.4/1M
seed-bootstrap · Aug 1, 2026
Context window+72k
Claude 3.5 Haiku200k
seed-bootstrap · Aug 1, 2026
OpenAI o1-mini128k
seed-bootstrap · Aug 1, 2026
BenchmarkClaude 3.5 HaikuOpenAI o1-miniAdvantage Delta
Preference Elo
1,224
seed-bootstrap · Aug 1, 2026
1,445
seed-bootstrap · Aug 1, 2026
+221
Coding Elo—
1,468
seed-bootstrap · Aug 1, 2026
—
LiveBench
44.8%
seed-bootstrap · Aug 1, 2026
62%
seed-bootstrap · Aug 1, 2026
+17.2%
SWE-bench
36.2%
seed-bootstrap · Aug 1, 2026
56.4%
seed-bootstrap · Aug 1, 2026
+20.2%
GPQA Diamond
54.1%
seed-bootstrap · Aug 1, 2026
76.8%
seed-bootstrap · Aug 1, 2026
+22.7%
Time to first token
110 ms
seed-bootstrap · Aug 1, 2026
280 ms
seed-bootstrap · Aug 1, 2026
+170 ms
Output speed
140 tok/s
seed-bootstrap · Aug 1, 2026
85 tok/s
seed-bootstrap · Aug 1, 2026
+55 tok/s
Input price
$0.8/1M
seed-bootstrap · Aug 1, 2026
$1.1/1M
seed-bootstrap · Aug 1, 2026
+$0.3/1M
Output price
$4/1M
seed-bootstrap · Aug 1, 2026
$4.4/1M
seed-bootstrap · Aug 1, 2026
+$0.4/1M
Context window
200k
seed-bootstrap · Aug 1, 2026
128k
seed-bootstrap · Aug 1, 2026
+72k
Interactive Simulator (USD)

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Save up to 16% with Claude 3.5 Haiku
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Claude 3.5 Haiku$88.00 / mo
In: $28Out: $60
OpenAI o1-mini$104.50 / mo
In: $38.5Out: $66
Estimated Cost Delta

Claude 3.5 Haiku is estimated to save $16.50/month ($198/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    OpenAI o1-mini:Pick OpenAI o1-mini when repo-level coding accuracy is the constraint.
  • 2
    Claude 3.5 Haiku:Pick Claude 3.5 Haiku when you are optimizing output cost.
  • 3
    Claude 3.5 Haiku:Pick Claude 3.5 Haiku when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsOpenAI o1-mini

Higher SWE-bench (56.4%).

High-volume chatClaude 3.5 Haiku

Lower output list price ($4/1M).

Voice / low-latency UIClaude 3.5 Haiku

Lower TTFT (110 ms).

Long-document RAGClaude 3.5 Haiku

Larger window (200k).

Screenshots / visionClaude 3.5 Haiku

Claude 3.5 Haiku is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsOpenAI o1-miniHigher SWE-bench (56.4%).
High-volume chatClaude 3.5 HaikuLower output list price ($4/1M).
Voice / low-latency UIClaude 3.5 HaikuLower TTFT (110 ms).
Long-document RAGClaude 3.5 HaikuLarger window (200k).
Screenshots / visionClaude 3.5 HaikuClaude 3.5 Haiku is the side marked multimodal in the catalog.
Community Sentiment

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
Anthropic

Claude 3.5 Haiku

Elo 1,224
SWE-bench36.2%
Speed (tok/s)140 tok/s
Input / 1M Tokens$0.8/1M
Output / 1M Tokens$4/1M
OpenAI

OpenAI o1-mini

Elo 1,445
SWE-bench56.4%
Speed (tok/s)85 tok/s
Input / 1M Tokens$1.1/1M
Output / 1M Tokens$4.4/1M

Frequently Asked Questions

Which is better overall, Claude 3.5 Haiku or OpenAI o1-mini?
OpenAI o1-mini has the higher preference Elo in our latest snapshot (1,445). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Claude 3.5 Haiku or OpenAI o1-mini?
OpenAI o1-mini leads SWE-bench at 56.4% vs 36.2%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?
Claude 3.5 Haiku output tokens are $4/1M versus $4.4/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude 3.5 Haiku or OpenAI o1-mini?
Claude 3.5 Haiku has the lower time-to-first-token (110 ms vs 280 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?
Claude 3.5 Haiku accepts 200k tokens versus 128k.
Can I self-host either model?
Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?
No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?
Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude 3.5 Haiku and OpenAI o1-mini Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude 3.5 Haiku matchups →|All OpenAI o1-mini matchups →
Claude 3.5 Haiku vs Claude Haiku 4.5 (next haiku)OpenAI o1-mini vs GPT-4o mini (previous gpt-mini)OpenAI o1-mini vs OpenAI o3-mini (next gpt-mini)Claude Opus 4.5 vs OpenAI o1-miniClaude Opus 4.6 vs OpenAI o1-miniClaude Sonnet 4.5 vs OpenAI o1-mini